PROBLEM TO BE SOLVED: To efficiently make use of receipt paper.SOLUTION: A commodity registration device 2 issues a first accounting ticket 7 including a first print part 7a having second settlement information 7b printed thereon, which is capable of acquiring first settlement information 8b from a store management server 4 when not detecting a commodity settlement device 3 which is offline communication with the store management server 4. The commodity registration device 2 acquires a use situation of a self-payment system 1 and sets a threshold 9 according to the use situation when detecting the commodity settlement device 3 which is offline communication with the store management server 4. The commodity registration device 2 then switches the ticket issuance between a second accounting ticket 8 including a second print part 8a having the first settlement information 8b printed thereon and having a print range larger than that of the first print part 7a and the first accounting ticket 7 on the basis of a co
